Electricity + Control April 2015

LIGHTING

ROUND UP

Specialised turnkey lighting project at data centre

ACTOM Electrical Products , theACTOM group’s distribution arm which incorporates a specialised lighting business unit, recently completed a turnkey lighting project for South Africa’s leading cellular network Vodacom for its Data Centre in Midrand, Gaut- eng, involving designing and providing energy-efficient lighting systems for the interior illumination of the building.The project, overseen by Taemane Consulting Engineers, Vodacom’s con- sulting electrical engineers, was executed by ACTOM Electrical Products’ lighting business unit fromNovember 2013 to July 2014. The lighting design technologies applied on the project com- prise: • A custom-designed and fabricated stainless steel suspended light fixture supporting four large edge-lit linear LED lumi- naires to illuminate the main reception area. It is coupled to a daylight harvesting system designed to automatically dim the artificial illumination during the day when the area is

William Blackbeard (left) and Neil van Blerk in one of Vodacom’s new data centre halls, which are illuminated by recessed high performance T5 light fittings, controlled by individually fitted passive infrared occupancy sensors.

sufficiently lit by natural light. The luminaires’ on-board photocell sensor continuously measures the ambient light levels and automatically ramps up its light output to supplement the natural light if a drop in the pre-set ambi- ent illumination level is detected due to overcast conditions and automatically ramps up to its full capacity at night • The Data Centres occupy an open plan area (White Space), but each Data Centre hall requires individual concentrated lighting according to occupancy and is therefore illuminated by high efficiency T5 linear fluorescent recessed luminaires individually equipped with passive infrared occupancy sensors allowing for accurate lighting control and switching within tight parameters • The passages serving the Data Centres are illuminated by high performance IP 65 rated linear fluorescent luminaires equipped with electronic control gear cou- pled to high efficiency 45 W T5 lamps and employing a corridor dimming function – as opposed to the on/off switching that ap- plies in the occupancy/non-occu- pancy applications – and control coupled to strategically placed sensors • High efficiency LED luminaires illuminate the offices Enquiries: Neil van Blerk. Tel. 011 878 3050 or email neil.van-blerk@actom.co.za